A site to transform Pubmed publications into these bibliographic reference formats: ADS, BibTeX, EndNote, ISI used by the Web of Knowledge, RIS, MEDLINE, Microsoft's Word 2007 XML.

Jyoti Khadka - Top 30 Publications

Diabetic Retinopathy and Macular Edema Quality-of-Life Item Banks: Development and Initial Evaluation Using Computerized Adaptive Testing.

The purpose of this study was to assess the psychometric properties of diabetic retinopathy (DR) and diabetic macular edema (DME) quality-of-life (QoL) item banks and determine the utility of the final calibrated item banks by simulating a computerized adaptive testing (CAT) application.

Intensive Blood-Pressure Treatment and Patient-Reported Outcomes.

Patient-reported Outcomes for Assessment of Quality of Life in Refractive Error: A Systematic Review.

This review has identified the best existing patient-reported outcome (PRO) instruments in refractive error. The article highlights the limitations of the existing instruments and discusses the way forward.

Uncorrected and corrected refractive error experiences of Nepalese adults: a qualitative study.

The aim of this study was to explore the impact of corrected and uncorrected refractive error (URE) on Nepalese people's quality of life (QoL), and to compare the QoL status between refractive error subgroups.

Inter-relationship between visual symptoms, activity limitation and psychological functioning in patients with diabetic retinopathy.

We explored the direct and indirect impact of restrictions in daily living activities on the relationship between perceived visual symptoms associated with diabetic retinopathy (DR) and psychological functioning.

Patient-reported outcome measures in amblyopia and strabismus: a systematic review.

Many patient-reported outcome measures (PROMs) have been developed and/or used to measure the impact of amblyopia and strabismus on quality of life (QoL). Identifying the one with superior quality is important for evaluating the effectiveness of novel therapy for amblyopia and for directing improved clinical decision-making in adults considering strabismic surgery. Therefore, the aim of this review is to identify all PROMs previously developed/used to study the impact of amblyopia and/or strabismus on QoL and to appraise the quality and comprehensiveness of content of the disease-specific instruments.

Questionnaires for Measuring Refractive Surgery Outcomes.

To identify the questionnaires used to assess refractive surgery outcomes, assess the available questionnaires in regard to their psychometric properties, validity, and reliability, and evaluate the performance of the available questionnaires in measuring refractive surgery outcomes.

Impact of refractive error on quality of life: a qualitative study.

This study qualitatively explores the impact of refractive error on adults, particularly after correction.

Assessment of patient-reported outcomes in retinal diseases: a systematic review.

Advances in the understanding of the genetic, molecular, and cellular biology of retinal diseases have led to the development of new treatments. These expanding treatment options demand appropriate outcome measures for studies of treatment benefit including patient-reported outcomes (PROs). A plethora of PRO instruments assess impacts of retinal diseases from the patients' perspectives. We review all the studies that implemented PRO assessment in retinal diseases and also discuss quality assessment of the PRO instruments. We also include qualitative studies that explored quality of life impact on people with retinal diseases. Most studies used PRO instruments not specifically developed for retinal diseases (non-disease specific), nor have they undergone comprehensive validation in this disease group. A few retina-specific PRO instruments are available, but they suffer from limited content coverage of quality of life. Finally, we discuss the need for a new comprehensive and technologically advanced PRO instrument to assess quality of life impacts in retinal diseases.

Development of a Keratoconus-Specific Questionnaire Using Rasch Analysis.

To develop and validate a keratoconus-specific quality of life (QoL) questionnaire: the Keratoconus Outcomes Research Questionnaire (KORQ).

Development and validation of an instrument to assess job satisfaction in eye-care personnel.

The aim was to develop and validate an instrument to measure job satisfaction in eye-care personnel and assess the job satisfaction of one-year trained vision technicians in India.

Assessment of Cataract Surgery Outcome Using the Modified Catquest Short-Form Instrument in China.

To assess cataract surgery outcome using the Rasch scaled Chinese version of the Catquest short-form.

Methods to Develop the Eye-tem Bank to Measure Ophthalmic Quality of Life.

There is an increasing demand for high-standard, comprehensive, and reliable patient-reported outcome (PRO) instruments in all the disciplines of health care including in ophthalmology and optometry. Over the past two decades, a plethora of PRO instruments have been developed to assess the impact of eye diseases and their treatments. Despite this large number of instruments, significant shortcomings exist for the measurement of ophthalmic quality of life (QoL). Most PRO instruments are short-form instruments designed for clinical use, but this limits their content coverage often poorly targeting any study population other than that which they were developed for. Also, existing instruments are static paper and pencil based and unable to be updated easily leading to outdated and irrelevant item content. Scores obtained from different PRO instruments may not be directly comparable. These shortcomings can be addressed using item banking implemented with computer-adaptive testing (CAT). Therefore, we designed a multicenter project (The Eye-tem Bank project) to develop and validate such PROs to enable comprehensive measurement of ophthalmic QoL in eye diseases.

Item Banking Enables Stand-Alone Measurement of Driving Ability.

To explore whether large item sets, as used in item banking, enable important latent traits, such as driving, to form stand-alone measures.

Validation of an instrument to assess visual ability in children with visual impairment in China.

To validate a visual ability instrument for school-aged children with visual impairment in China by translating, culturally adopting and Rasch scaling the Cardiff Visual Ability Questionnaire for Children (CVAQC).

Precision (repeatability and reproducibility) studies and sample-size calculation.

Papua New Guinea vision-specific quality of life questionnaire: a new patient-reported outcome instrument to assess the impact of impaired vision.

The aim of this study was to develop and validate a new vision-specific quality of life (VS QoL) instrument and to assess the impact of vision impairment and eye disease on the quality of life of adults in Papua New Guinea (PNG).

Divergence in the lived experience of people with macular degeneration.

The aim of this study was to understand people's experience with age-related macular degeneration (AMD) in light of new treatment successes.

Translation, cultural adaptation, and Rasch analysis of the visual function (VF-14) questionnaire.

To translate, culturally adapt, and validate the original and previously validated shorter versions of the Visual Function Index (VF-14) questionnaire in a Chinese population.

Cross-cultural validation of the National Eye Institute Visual Function Questionnaire.

To assess the native and the previously Rasch-modified National Eye Institute Visual Function Questionnaire (NEI VFQ) scales in a Chinese population.

Quality assessment of ophthalmic questionnaires: review and recommendations.

The aim of this article was to systematically review all the available ophthalmic patient-reported outcome (PRO) instruments (questionnaires) that demonstrated interval measurement properties to identify the instruments with the highest psychometric quality for use in different eye diseases and conditions.

Rasch modified NEI VF-11R or actually the VF-11R?

Compliance and hygiene behaviour among soft contact lens wearers in the Maldives.

Significant levels of non-compliance and poor hygiene among contact lens wearers have been reported previously from different parts of the world. This survey aimed at identifying the scope of hygiene and non-compliant behaviour of soft contact lens wearers in the Maldives.

Identifying content for the glaucoma-specific item bank to measure quality-of-life parameters.

Patient-reported outcomes (PROs) have become essential clinical trial end points. However, a comprehensive, multidimensional, patient-relevant, and precise glaucoma-specific PRO instrument is not available. Therefore, the purpose of this study was to identify content for a new, glaucoma-specific, quality-of-life (QOL) item bank.

Effectiveness of the community-based Low Vision Service Wales: a long-term outcome study.

To evaluate the long-term effectiveness of the community-based Low Vision Service Wales (LVSW).

Subjective quality of vision before and after cataract surgery.

To investigate the effect of cataract surgery on subjective quality of vision.

Evaluation of item candidates for a diabetic retinopathy quality of life item bank.

We are developing an item bank assessing the impact of diabetic retinopathy (DR) on quality of life (QoL) using a rigorous multi-staged process combining qualitative and quantitative methods. We describe here the first two qualitative phases: content development and item evaluation.

Psychometric properties of the NEI-RQL-42 questionnaire in keratoconus.

To assess the psychometric properties of the National Eye Institute Refractive Error Quality of Life (NEI-RQL-42) questionnaire in keratoconus and compare these findings to patients with refractive error correction alone.

Cognitive trajectories after postoperative delirium.

Pupil size and LASIK.